Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
|
Sets immediately on SPI comms errors for visibility into the health of the comms interface.
|
On single SPI comms error with the asic
|
HvSenseAsicFault is at risk of being triggered soon
|
No
|
|
|
Pack contactor exited the economized state unexpectedly. Possibly insufficient coil drive current.
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Contactor control state exited CLOSED because either of the contactors exited ECONOMIZED.
|
Vehicle may lose propulsion or be unable to support LV system.
|
No
|
|
|
Tried to close pack contactors but failed because a voltage match was not maintained.
|
Contactor control state exited CLOSING due to voltage match being lost.
|
Pack contactors will remain open.
|
No
|
|
|
Pack contactors were blocked from opening due to high current. Pyro deployed instead.
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Pack current is above threshold while trying to open pack contactors.
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The positive and negative pyro fuses will be deployed.
|
No
|
|
|
An overcurrent event was detected by hardware, or ER has failed resulting in a pyro fuse deployment.
|
Passive pyro fuse deployment was detected
|
Subpack is offline
|
No
|
|
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Pyro fuse deployment was triggered but did not execute.
|
Software did not successfully deploy the pyro
|
Pyro deployment may be compromised
|
No
|
|
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Pyro fuse deployment was triggered by firmware.
|
Pyro fuse deployment was triggered by firmware
|
Subpack is offline
|
No
|
|
|
Pyro fuse may not have cleanly blown, post-mortem diagnostic.
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Energy and/or charge delivered to the squib were out-of-tolerance
|
Pyro deployment may be compromised
|
No
|
|
|
Pyro fuse is faulted.
|
Leak test failure or Switch test failure or other failure
|
Pyro fuse deployment ability is compromised
|
No
|
|
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Pyro squib is disconnected or open-circuit, but pyro circuit is otherwise nominal.
|
Pyro squib is missing resulting in open-circuit resistance
|
Pyro fuse deployment ability is compromised
|
No
|
|
|
Fault impacting the pyro sub-system.
|
Pyro operations could not be started
|
Pyro cannot be deployed
|
No
|
|
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Energy-reserve circuit has a failure.
|
Voltage of the energy-reserve is out-of-tolerance
|
Pyro deployment may be compromised
|
No
|
|
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Indicates a BMB reference voltage has continuously been out of bounds.
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Any BMB reference voltage has continuously deviated outside the in-bounds threshold of the nominal voltage
|
Other BMB voltage signals will be substituted given the reference voltage is unreliable
|
No
|
|
|
Indicates a mismatch between a stack voltage and the sum of its brick voltages.
|
Any BMB continuously has a stack voltage that doesn't align with the sum of its brick voltages within the in-bounds tolerance
|
BMB stack and brick voltage signals will be substituted
|
No
|
|
|
HVPACK cannot talk to all BMBs.
|
A communication issue with the BMB daisy chain is detected
|
May indicate a loss of BMB sensor data
|
No
|
|
|
Warns if the pack discharge is above max discharge current limit
|
The pack current is above max discharge current limit for X duration (in msec)
|
The contactors will open immdediately or pyro fuse may blow
|
No
|
|
|
Warns if the pack current (discharge or charge) is above max current limit.
|
The pack current (discharge or charge) is above max current limit.
|
The pyro fuse will blow
|
No
|
|
|
High Voltage Battery Pack (HVPACK) reports the shunt bar temperature is lower than expected.
|
Shunt bar temperature is outside the expected threshold.
|
This alert is primarily informational and is used for logging purposes.
|
No
|
|
|
Negative contactor is expected to be open but HV current is still present. Possible weld detected.
|
Contactor state timed out of OPENING (and transitioned to AUX_MISMATCH) due to HV current not being low enough to open contactors.
|
The pyro fuse may be deployed.
|
No
|
|
|
Positive contactor is expected to be open but HV current is still present. Possible weld detected.
|
Contactor state timed out of OPENING (and transitioned to AUX_MISMATCH) due to HV current not being low enough to open contactors.
|
The pyro fuse may be deployed.
|
No
|